besson



(N0 MOdeL). 2 Sheets-Sheet 2.

H. BESSON & E. N. KENT. MACHINERY FOR GRINDING GLASS.

No. 375,332. Patented Dec. 2'7, 1887.

N. PFIERS Pfimln-Lmogmphnn Walhillginn. D. (L

.QIS

UNITED STATES.

PATENT OFFICE.

HYPPOLITE BESSON AND ERNEST NEILD KENT, OF LONDON, COUNTY OF MIDDLESEX,ENGLAND.

MACHINERY FOR GRINDlNG GLASS.

SPECIFICATION forming part of Letters Patent No. 375,332, dated December27, 1887.

Application filed May 10, 1886. Serial No. 201,702.

To all whom it may concern.-

Be it known that we, HYPPOLITE BEssoN, mechanical engineer, and ERNESTNEILD KENT, brush-maker, subjects of the Queen of Great Britain,residing at London, in the county of Middlesex, England, have inventednew and useful Improvements in Machinery for Grinding, Shaping, andBeveling Glass, (for which we have obtained Letters Patent in i0 GreatBritain, No. 7 ,461, dated May 9, 1884;) and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,reference being had to the drawings accompanying the same.

This invention relates to machinery for grinding and beveling glass, theshape thereof being determined by a pattern rotating concentrically withthe glass.

The said invention consists in the construction and combination ofdevices hereinafter particularly set forth and claimed.

In the accompanying drawings, Figure 1 represents a side elevation of amachine embodying our invention. Fig. 2 represents a 2 plan view of thesame, and Fig. 3 represents a front elevation of the same.

In said drawings, G designates the grindingwhecl,which is mounted on ahorizontal shaft, G, journalcd in bearings formed on standards 0 9, saidbearings being covered by caps g,de-

tachably held to said standards by screws 9".

F designate a supporting-frame, which inelines upward toward saidgrinding-Wheel and bears at its upper end a pair of spindles, A,

arranged end to end. These spindles are forced together by screws d,arranged at their outer ends, and working through parts of said frame,so that the inner ends of said spindles clamp between them the piece ofglass,B,which is to be ground. To grasp it more effectually, the saidinner ends are enlarged, forming disks, as shown. On this same shaft apattern, 0, is also mounted, having the shape which is to be given tothe piece of -'glass,B. This pattern is in contact with a curved guide,0, supported rigidly upright by a rod, 0, adjustable vertically in asocket, c, by a set-screw, T.

On one of the spindles A a gear-wheel, E, is mounted, meshing withanother gear-wheel,

'E E the spindles A are driven.

E, on another shaft, A, parallel to the shaft (N0 model.)- Patented inEngland May 9, 1884, No. 7,461.

A and also journaled in the frame F. At the lower end of frame F anothershaft, A, is mounted therein, being parallel to shafts A and A. Thisshaft serves as a pivot for said frame, it being journaled in bearingsraised on a plate,P. Shaft A is provided with pulleys L L, the formerbeing arranged for belting to a pulley, L, on shaft A, and the otherpulley, L,for belting to anysuitable motor. By these pulleys and shaftsand the gear-wheels They turn as a single shaft, and the glass, B,andpattern 0 turn with them. The contact of the glass B with thegrinding-wheel G is determined by the contact of the pattern 0 with thecurved guide 0. Consequently the shape of pattern 0 regulates that givento" the glass, B, by the action of said wheel.

The plate 1? is attached to a slide, V, by a pivot, W. Said slideoverlaps a lowerslide, V, arranged transversely of the machine,andengages with a guideway, 12, formed in the sides of said lower slide. Onone side said slide V has a movable beveled block, c', which is forcedby a clamp-screw, o into contact with said bar. By unfastening andwithdrawing this beveled block the upper slide, V, is left free to beremoved. A screw-threaded rod, S, extending transversely of the machine,adjuststhis slide V laterally. The lower slide, V, has forward and backadjustment at right angles to that of upper slide, V, by means of ascrew-threaded rod, S, which passes through a nut, S extending down fromslide V. The construction of the two adjusting screwthreaded rods S S issubstantially the same, and they operate in the same way. The slides VV, with these adjusting devices, make up a double adjustableslide-support, such as is already in frequent use, and does not needfuller description.

A cord, 0, having a terminal weight, passes over a pulley, O, and isattached to a stud or button, 0, Figs. 5 and 6, extending backward fromthe plate I at one corner of the latter. The pulley O is parallel to therear edge of said plate, so that the pull of the weight tends to turnsaid plate on its pivot W and bring the glass, B, obliquely into contactwith the grinding-wheel G. The action of this weight ICO is limited by arigid arm, q, extending forward from the front of said plate, andanother rigid arm, q, arranged at right angles thereto. The latter armis stationary with relation to the pivotal movement of plate P, and maybe adjusted, by means of nuts q and screwthreads q', to regulate thedistance through which the arm (1 must move before meeting the arm q.The latter arm is passed through a sleeve, g, which is rigid with thelower slide, V, the nuts q being on each side of said sleeve. XVhcn thearm q comes in contact with the arm q, the plate P, of necessity, stops,and the beveling action of the grinding on the glass will of coursecease as soon as the material of thelatter in contact with the former isworn away. The weight and cord with the arms (1 q thus constitute, takentogether, an automatic device for regulating the beveling action of thegrinding-wheel.

The rocking frame F leans toward the grinding-wheel G. To regulate thistendency we provide the under side of frame F with a fixed bar,f, whichextends downward. A lever, 1*, of the first kind is fulcrumed on shaftA, and its rear end extends under said barf, the forward end of saidlever being pressed on by a spiral spring, H, surrounding a fixed rod,Z. This rod passes through a slot, 1', in lever Z, Fig. 2, and serves toguide the same.

It is screw-threaded at its upper end to re ceive a nut, 1, whereby thetension of said spring His adjusted. The weight of the frame F bringsthe arm f down on the rear end of lever Z. The spring II theneounterbalances the weight of said frame to a greater or less degree,according to whether said nut is screwed up or down. The ad ustment issuch as to allow the pattern 0 to come in contact with the guide 0without too great pressure or friction. A horizontal bar, 12, attachedto brackets 12, which rise from base T, serves as a rest for frame Fwhen the machine is not in use, the frame F being simply turned backagainst said horizontal bar.

In operating this machine the glass is inserted and fastened as beforedescribed. The frame F is lifted from bar 1) and turned into theposition shown in Figs. 1, 2, and 3. The

plate is then turned gently on its pivot WV, using the arm q asa handle,until the glass, B, meets the face of the grinding-wheel G. If theinclination is not such as to produce exactly the bevel desired, theproper position therefor is secured by adjusting the slides V V by meansof screw-threaded rods S S. Rotation is given to the spindles A A bymeans of the belt-gearing and cog-gearing before described. The glassand the pattern are made to rotate slowly, but always with relation tothe speed of the grinding-wheel G, and the plate P is turned slowly onpivot 7 until the arm q comes in contact with arm q, when the grindingaction speedily ceases.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. The combination of agrinding-wheel, rotary glass-holding spindles,and shafts and gearing for rotating said spindles and grimling-whcel,with a rocking framein which said spindles are mounted, an arm extendingdown from said frame, alever pressed upon by said arm, and an adjustablespring bearing on said lever to counterbalance said frame, substantiallyas set forth.

2. A grinding-wheel, rotary glass-holding spindles, a pattern carried bysaid spindles, a fixed guide against which said pattern turns, andshafts and gearing for rotating said spindles and grinding-wheel, incombination with a frame in which said spindles are mounted, a pivotedplateto which said frame is attached, a weight, cord, and pulley forturning said plate on its pivot, and two arms, one carried by saidplate, the other relatively fixed but adjustable, for regulating theamount of pivotal motion allowed said plate, substantially as set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

I'IYPPOLITE BESSON. ERNEST NEILD KENT.

\Vitnesses:

ARTHUR E. Enwlmns, E. SCRIVEN.

